. >>> demanding answers, coming up, the bay area politician asking the makers of this energy drink to defend the ingredients. >> and ktvu editor is uncoming. >>> the health risks this generation -- uncovering the health risks that ken jays facials -- generation faces. go, go, go. mmm. give me some of that sauce. i don't know, i think i might bail. yeah, it's pretty dead. [ male announcer ] one is never enough. new kfc dip'ems. freshly prepared tenders dipped in irresistible sauces. this is it. now this is a party. [ male announcer ] try a 20 pc bucket with 6 sauces. today tastes so good. >>> new research suggests that it might be possible one day to restore male fertility after chemotherapy treatments. researchers at the university of pittsburgh school of medicine froze sperm producing stem cells from monkeys and gave them chemotherapy drugs. a few months later, the stem cells were i am into the monkey's test -- implanted into the monkey's test tees. >>> the san francisco city attorney is raising concerns over the caffeine level in one energy drink. he sent a letter to the monster bev